Cooling and ventilating apparatus



March 17, 1931. A. M. MERTZANOFF 1,796,658

COOLING AND VENTTTJATTNG APPARATUS Filed Jan. 27, 1928 2 Sheets-Sheet l March 1931. A. M MERTZANOFF 1,796,658

COOLING AND VENTILATING APPARATUS Filed Jan. 27, 1928 2 Shets-Sheet 2 INVENTOR Patented Mar. 17, 1931 ,UNITED STATES PATENT OFFICE ANDRE M. mnnrzanoi r, or new YORK, n. Y., assrenon T0 AMERICAN RADIATOR COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY COOLING AND VENTILATING APPARATUS Application filed January 27, 1928. Serial No. 250,017.

My invention relates to improvements in means for ventilating and cooling buildings and other structures, and the same has for its object more particularly to provide a simple, efiicient, and reliable apparatus for modifying or controlling the temperature in buildings, chambers, or other structures.

Further, said invention has for its object to provide means whereby one or more currents of warm air may be induced and given definite direction and caused to travel to and through a passage containing means for modifying or reducing the temperature of said induced air currents.

Further, said invention has for its object to provide a device having the entrance portion for the currents of Warm air arranged in a horizontal plane above that of the exit for the cooled air'whereby a constant circulocated.

lation of columns of air of different temperatures may be produced and maintained throughout the entire building or structure. F urther, said invention hasfor its object to rovide a device in which the air to be coo ed may be taken from within the building or structure or from without, or partly from within and without, as desired.

Further," said invention has for its object to provide a device which is so insulated that the temperature interior thereof will not be affected by, or subject to temperature changes of the air in the space in which the device is Other objects will in partbe obvious and in part be pointedout hereinafter.

To the attainment of the aforesaid objects and ends, my invention consists in the novel details of construction, and in the combina-,

. tion, connection, and arrangement of parts hereinafter more fully described and then pointed out in the claims.

In the accompanying drawings showing an illustrative embodiment of the invention,

Figure 1 is a diagrammatic view showing a cross-sectional view of a building with one form of apparatus constructed according to and embodying my invention installed therein' V Fig. 2 is an enlarged central vertical section of the aircooling device, and

the building,

for operating said compressor, and a condenslng coil 17. 18 denotes a flow pipe having one end connected to the compressor 15, and its other end, which includes the condensing coil 17, carried upward to the upper part of the building and connected to an expansion valve 19. 20 denotes a return pipe having its upper end connected to a cooling coil 21 forming part of the device 22, hereinafter described, located in the upper part of and having its lower or outlet end connected to the intake side of the compressor 15. 1

The device 22 is preferably located at a suitable point in an opening provided in the ceiling of the top floor, and comprises an outer circular casing 23 closed at its sides and top, and having an ope-n base. Within the casing 23 is centrally disposed a tubular member 24 preferably having a slightly constricted outlet 25, which may, if desired, be provided with a perforated plate or grille 26. The member 24 is supported within the casing 23 by a plurality of radial ribs 27. The lower or discharge end of the tubular member 24 is disposed in a horizontal'plane below that of the lower edge of outer casing 23, in order to insure the due separation of the Warm air entering he outer casing 23 from cooler air discharging from the lower or outlet end of the inner tubular member 24. Within said member 24 is centrally disposed a cooling coil 21 having its inlet end 28 con nected to the expansion valve 19, and its outlet end 30 connected to the return pipe 20.

31 denotes a fresh air supply pipe which extends through the outer casing 23 and has its inner end 32 curved downwardly and extends into the upper end of the tubular member 24 adjacent to the upper end of the condensing coil 21. The outer end of said pipe may extend through the side walls or roof of the building for introducing fresh air from ing without directly to the tubular member 24: of the device 22. In order to control the admission of fresh air from'without, the pipe 31 may be provided with a valve or damper 33.

In order to prevent the interior of the easing being affected by the temperature of the air within the attic or other space 34 of the building in which the device 22 is located, the outer side of said casing is jacketed with a suitable insulating or heating lagging covering 35.

The operation of the apparatus will, from theforegoing description, be largely obvious. It is only necessary to state that the cooling medium which is circulated is forced by the compressor 15 actuated by the motor 13, through the flow pipe 20, expansion valve 19, to the cooling coil 21 in the apparatus 22, and returned by the return pipe 18, condenser 17, to the compressor 15. As a result of the low temperature produced and maintained withinthe tubular member 24:, the temperature of the air entering the open upper end thereof will at once be reduced and owing to its heavier weight be caused to issue from the lower end of said tubular member 24. This action will cause the lighter warmer air entering the outer casing 23 to be drawn into the open upperend of the tubular member 24. and produce a constant circulation of air through the apparatus. The airthus cooled Wlll descend to the lowermost portions of the buildand cause the lighter warmer air to rise finds its way to the entrance until it finally 23 of the appaportion of the outer casing ratus.

When it is desired to introduce fresh or cold air directly from without the bu1ld1ng,1t merely becomes nccessaryto open the damper or valve 33, more or less, in the fresh air supplypipe 31, whereupon the air supplied there- P by will mix with the air from the interior of the building entering the outer casing 23.

It is to be noted particularly that by arranging the lower or outlet end of the tubular member 24: in a horizontal plane below that of the lower edge of the outer casing 23, the warm currents of air entering the apparatus will be maintained duly and positively separated from the cold currents issuing from the lower or outlet end of said tubular member 24.

Having thus described my said invention, what I claim and desire to secure by Letters Patent is:

1. An apparatus of the character described comprising a closed casing having an air inlet therein, a tubular member disposed centrally within said casing with its wall portions in spaced relation to said casing and having an air inlet at its top, and an air outlet disposed in a. horizontal plane below the air inlet in said casing, a refrigerating coil disposed within said member, means for cirmeaeee coil and means communicatingwith the interior of said refrigerating coil. for conducting air to said tubular member independently of that received by said member from said casing.

2. An apparatus of the character described comprising a closed casing having an air inlet therein, a tubular member disposed within said casing with its wall portions in spaced relation to said casing and having its discharge outlet in a horizontal plane below the base of said casing, a refrigerating coil disposed in said tubular member for reducing the temperature of air in passing through said tubular member, means for circulating a refrigerating medium through said coil, a pipe extending into said casing and having its inner end terminating above said refrigerating coil, and a Valve in said pipe for controlling the admission of air tosaid tubular member independently of that received by said member from said casing.

3. An apparatus of the character described comprising a closed circular casing having an air inlet in its base, a'tubular member disposed centrally within said casing with its wall portions in spaced relation to said casing and forming an annular air passage therebetween; said tubular member having an air inlet at its top, and'an air outlet at its base disposed in a horizontal plane below the air inlet inthe base of said casing, a

ipe.

Signed at the city of New York, in the county and State of New York, this 19th day of'August, one thousand nine hundred and twenty-seven.

ANDRE M. MER-TZANOFF.

culating a refrigerating medium through said I 

